Perfect Order Rate
Product of on-time, complete, damage-free and correctly documented rates.
Formula
Variables
Example
0.98×0.97×0.99×0.99 ≈ 0.93
How it works
Perfect Order Rate measures the share of orders that arrive with every required condition satisfied at the same time: on schedule, fully filled, undamaged, and with correct paperwork or data. Because an order only counts as perfect if it passes all four checks, the overall rate is found by multiplying the individual success rates together, which gives the probability that a single order meets every requirement.
When to use it
Use this metric when evaluating fulfilment performance in warehouses, distribution, e-commerce, or any supply chain where service quality depends on multiple checkpoints. It is especially useful for comparing sites, carriers, or time periods when you want a single measure of end-to-end order quality.
Worked example, step by step
Suppose a company has these rates: On-time delivery rate R1 = 0.96 Complete order rate R2 = 0.98 Damage-free rate R3 = 0.99 Correct documentation rate R4 = 0.97 Plug into the formula: POR = R1 × R2 × R3 × R4 POR = 0.96 × 0.98 × 0.99 × 0.97 Step by step: 0.96 × 0.98 = 0.9408 0.9408 × 0.99 = 0.931392 0.931392 × 0.97 = 0.90345024 Final answer: POR ≈ 0.903, or 90.3% of orders are perfect
Common mistakes to avoid
- Adding the component rates instead of multiplying them
- Using percentages as whole numbers, such as 96 × 98 × 99 × 97, without converting to decimals
- Assuming the result is each metric’s average rather than the chance that all four conditions happen together
Did You Know?
Because rates multiply, four good metrics of 98% still combine to only about 92% perfect orders.
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